JZlibDecoder.java — netty Source File

Source Code

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.handler.codec.compression;

import com.jcraft.jzlib.Inflater;
import com.jcraft.jzlib.JZlib;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.channel.ChannelHandlerContext;
import io.netty.util.internal.ObjectUtil;

import java.util.List;

public class JZlibDecoder extends ZlibDecoder {

    private final Inflater z = new Inflater();
    private byte[] dictionary;
    private boolean needsRead;
    private volatile boolean finished;

    /**
     * Creates a new instance with the default wrapper ({@link ZlibWrapper#ZLIB}).
     *
     * @throws DecompressionException if failed to initialize zlib
     * @deprecated Use {@link JZlibDecoder#JZlibDecoder(int)}.
     */
    @Deprecated
    public JZlibDecoder() {
        this(ZlibWrapper.ZLIB, 0);
    }

    /**
     * Creates a new instance with the default wrapper ({@link ZlibWrapper#ZLIB})
     * and specified maximum buffer allocation.
     *
     * @param maxAllocation
     *          Maximum size of the decompression buffer. Must be >= 0.
     *          If zero, maximum size is decided by the {@link ByteBufAllocator}.
     *
     * @throws DecompressionException if failed to initialize zlib
     */
    public JZlibDecoder(int maxAllocation) {
        this(ZlibWrapper.ZLIB, maxAllocation);
    }

    /**
     * Creates a new instance with the specified wrapper.
// ... (190 more lines)